421626229 has 2 divisors, whose sum is σ = 421626230. Its totient is φ = 421626228.

The previous prime is 421626209. The next prime is 421626241. The reversal of 421626229 is 922626124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381303729 + 40322500 = 19527^2 + 6350^2 .

It is a cyclic number.

It is not a de Polignac number, because 421626229 - 2²⁵ = 388071797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421626194 and 421626203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421626209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210813114 + 210813115.

It is an arithmetic number, because the mean of its divisors is an integer number (210813115).

Almost surely, 2^421626229 is an apocalyptic number.

It is an amenable number.

421626229 is a deficient number, since it is larger than the sum of its proper divisors (1).

421626229 is an equidigital number, since it uses as much as digits as its factorization.

421626229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 421626229 is about 20533.5391250510. The cubic root of 421626229 is about 749.8525511618.

The spelling of 421626229 in words is "four hundred twenty-one million, six hundred twenty-six thousand, two hundred twenty-nine".